Tony Curtis as Joe Martini

Gilbert Roland as Sylvio Malatesta

Marisa Pavan as Anna Malatesta

Jay C. Flippen as Sgt. Jack Gillen

Argentina Brunetti as Mama Malatesta

Ted de Corsia as Lt. Kilrain

Richard Monda as Pietro "Peanuts" Malatesta

Kathleen Freeman as Rosa Cuneo

Herb Vigran as Charlie Cuneo

Peggy Maley as Veda Pinelli

John Cliff as Father Giuseppe

Russ Conway as Det. Sgt. Sommers

Chico Vejar as Frankie Pellatrini

Tito Vuolo as Grocer

Helen Wallace as Mother Catherine

James Hyland as Frank Wilkins

Bobby Barber as Party Guest (uncredited)

Richard Benedict as Pool Player (uncredited)

Audrey Betz as Party Guest (uncredited)

Nina Borget as Party Guest (uncredited)

Chet Brandenburg as Counterman (uncredited)

Mary Chan as Restaurant Patron (uncredited)

Spencer Chan as Restaurant Patron (uncredited)

W.T. Chang as Restaurant Patron (uncredited)

Paul Cristo as Party Guest (uncredited)

James Dime as Diner Patron (uncredited)

Sam Finn as Boxing Match Spectator (uncredited)

Raoul Freeman as Chaperone at Dance (uncredited)

Joe Garcio as Party Guest (uncredited)

Chuck Hamilton as Cop (uncredited)

John Indrisano as Card Player (uncredited)

David Leonard as Father Tomasino (uncredited)

Tom McDonough as Doctor (uncredited)

Tina Menard as Party Guest (uncredited)

Ernesto Molinari as Party Guest (uncredited)

Ralph Montgomery as Reporter (uncredited)

Anton Northpole as Party Guest (uncredited)

Emma Palmese as Party Guest (uncredited)

Jean Ransome as Chaperone at Dance (uncredited)

Chris Robinson as Boy at Dance (uncredited)

Edwin Rochelle as Diner Patron (uncredited)

Victor Romito as Party Guest (uncredited)

Tony Roux as Card Player (uncredited)

Stephen Soldi as Card Player (uncredited)

Owen Song as Waiter (uncredited)

Hal Taggart as Chaperone at Dance (uncredited)

Rodger Terry as Chaperone at Dance (uncredited)

Theresa Testa as Party Guest (uncredited)

Sammee Tong as Restaurant Proprietor (uncredited)

Joe Turkel as Lothario at Dance (uncredited)

Philip Van Zandt as Vince de Paul (uncredited)

Renata Vanni as Señora Betgatina (uncredited)

Paul Weber as Doctor (uncredited)